Synchronization Work Items
The AND and OR work items are the only synchronization work items provided. Use these work items to join concurrent paths in a workflow. These work items have no properties to configure.
The output tokens for both work items are created only after all input tokens have been received; that is, after all predecessor work items have completed processing.
In the case of the AND work item, the output token carries a proceed result only if all input tokens have a proceed result. The OR work item produces a proceed token if at least one input token has a proceed result.